title: Improved calibration of SOIR/Venus Express spectra.
abstract: The SOIR instrument on board the ESA Venus Express mission has been operational since the insertion of the satellite around Venus in April 2006. Since then, it has delivered high quality IR solar occultation spectra of the atmosphere of Venus. The different steps from raw spectra to archived data are described and explained in detail here. These consist of corrections for the dark current and for the non-linearity of the detector; removing bad pixels, as well as deriving noise. The spectral calibration procedure is described, along with all ancillary data necessary for the understanding and interpretation of the SOIR data. These include the full characterization of the AOTF filter, one of the major elements of the instrument. All these data can be found in the ESA PSA archive.
authors.forename: Ann Carine
authors.initials: AC
authors.lastname: Vandaele
authors.forename: Arnaud
authors.initials: A
authors.lastname: Mahieux
authors.forename: Séverine
authors.initials: S
authors.lastname: Robert
authors.forename: Sophie
authors.initials: S
authors.lastname: Berkenbosch
authors.forename: Roland
authors.initials: R
authors.lastname: Clairquin
authors.forename: Rachel
authors.initials: R
authors.lastname: Drummond
authors.forename: Vincent
authors.initials: V
authors.lastname: Letocart
authors.forename: Eddy
authors.initials: E
authors.lastname: Neefs
authors.forename: Bojan
authors.initials: B
authors.lastname: Ristic
authors.forename: Valérie
authors.initials: V
authors.lastname: Wilquet
authors.forename: Frédéric
authors.initials: F
authors.lastname: Colomer
authors.forename: Denis
authors.initials: D
authors.lastname: Belyaev
authors.forename: Jean-Loup
authors.initials: JL
authors.lastname: Bertaux